The high power RF circuit board is designed with 0 pins.Attenuator RF Type from the Evaluation board.Try searching with HMC541 if you're looking for variants.RF Board is included in the PCB mount.
111317-HMC541LP3 Features
0 pins Attenuator Type
111317-HMC541LP3 Applications
There are a lot of Analog Devices Inc. 111317-HMC541LP3 RF Boards applications.